/*
 * 文件名：AppManager.java
 * 版权：(C)版权所有2013-2013 com.zilla
 * 描述：应用生命周期管理类
 * 修改人：ze.chen
 * 修改时间：2013-6-5 下午5:19:12
 */
package com.zilla.android.zillacore.libzilla.lifecircle.exit;

import android.app.Activity;
import android.app.ActivityManager;
import android.content.Context;
import com.github.snowdream.android.util.Log;

import java.util.Stack;

/**
 * 应用生命周期管理类<br>
 * 应用生命周期管理;该类已经被集成到LifeCicleExit;
 * 并被加入了ZillaActivity中，该类对用户透明，不需要开发者调用@LifeCircleInject protected LifeCicleExit lifeCircleExit;
 *
 * @author ze.chen
 * @version 1.0
 * @date 2013-6-5 下午5:19:12
 */
public class AppManager {

    private static Stack<Activity> activityStack;
    private static AppManager instance;

    private AppManager() {
    }

    /**
     * 单一实例
     */
    public static AppManager getAppManager() {
        if (instance == null) {
            instance = new AppManager();
        }
        return instance;
    }

    /**
     * 添加Activity到堆栈
     */
    public void addActivity(Activity activity) {
        if (activityStack == null) {
            activityStack = new Stack<Activity>();
        }
        activityStack.add(activity);
    }

    /**
     * 获取当前Activity（堆栈中最后一个压入的）
     */
    public Activity currentActivity() {
        Activity activity = activityStack.lastElement();
        return activity;
    }

    /**
     * 结束当前Activity（堆栈中最后一个压入的）
     */
    public void finishActivity() {
        Activity activity = activityStack.lastElement();
        finishActivity(activity);
    }

    /**
     * 结束指定的Activity
     */
    public void finishActivity(Activity activity) {
        if (activity != null) {
            activityStack.remove(activity);
            activity.finish();
            activity = null;
        }
    }

    /**
     * 结束指定类名的Activity<br>
     * 结束指定类名的Activity
     *
     * @param cls
     */
    public void finishActivity(Class<?> cls) {
        for (Activity activity : activityStack) {
            if (activity.getClass().equals(cls)) {
                finishActivity(activity);
            }
        }
    }

    /**
     * 结束所有Activity
     */
    public void finishAllActivity() {
        for (int i = 0, size = activityStack.size(); i < size; i++) {
            if (null != activityStack.get(i)) {
                activityStack.get(i).finish();
            }
        }
        activityStack.clear();
    }

    /**
     * 退出应用程序
     */
    public void AppExit(Context context) {
        try {
            finishAllActivity();
            ActivityManager activityMgr = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
            activityMgr.restartPackage(context.getPackageName());
            System.exit(0);
        } catch (Exception e) {
            Log.e("AppManager", "Exception", e);
        }
    }
}
